I have always used (and spliced) three-strand nylon in the past for dock and anchor lines (other boats), but for my C-Dory I decided to try 8-plait (specifically, 1/2" Yale Brait). I had heard and read good things, and to me, one of the "fun" things about a smaller boat is that I can experiment (smaller size, lower cost, and manageable physics as compared to big boats) with new things when I want to. While I read that Brait had good/better stretch, etc., the main property that attracted me was that it falls into a much smaller "pile" in the locker as compared to three-strand (and doesn't hockle, not that I had a lot of problem with that in the past).
I did slightly worry that the strands might "pick" (like a sweater), and for that reason I might not choose at as a dock line, but so far so good as an anchor rode. I've anchored around 40 times on it so far, plus dragged it over sandy beaches (dragged as in carried, not as in losing grip). It has a nice soft hand, and indeed does not hockle. It falls/packs down beautifully in the locker. It was reasonably easy to clean after Powell.
Splicing: I spliced it myself (rope to chain splice) and while the instructions were slightly confusing to me, the actual splice was logical and not that difficult.
I would absolutely buy it again for the C-Dory (and perhaps for other boats). I have recently purchased a windlass, but have not installed it yet, so can't comment on that aspect of it.